中文摘要：

为探索溢油在海底水环境中的运动规律及溢出速度与溢出量的变化趋势,采用流体体积法（VOF）追踪自由界面,以FLUENT为计算平台,建立二维海底沉船溢油模型,动态模拟海底溢油漂移扩散变化的全过程.结果表明,海底沉船溢油初期溢出物为空气与油混合物,溢出速度在瞬间达到最大值后出现波动;溢油后期的溢出物为油与水的混合物,溢油速度趋于0;溢油量随着时间的推移逐渐增加,但增加幅度逐渐减小.将模拟结果与相关实验结果对比可知,实验现象与数值模拟结果相符,该二维海底沉船溢油模型具有可行性.

英文摘要：

The two-dimension numerical simulation of wrecked ship＇s oil spill was carried out by Fluent to explore the motion law of wrecked ship＇s oil spill and variation tendency of spill velocity and volume.The free interfaces were traced by the volume of fluid（VOF） method.The transport and diffusion of oil spill could be simulated dynamically.Results show that the oil spills from the tank together with air at initial stage,and the spill velocity reaches to the highest one instantaneously and then follows by a short-term fluctuation.At final stage,the oil spills together with water and the spill velocity tends to zero.The spilled volume increases gradually with lapse of time,but the increasing degree decreased gradually.Experiment on oil spill indicates that the simulation results match well with the experimental results,which show that the proposed two-dimension numerical model is feasible.